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Code Issues Projects Releases Packages Wiki Activity

Fakedns improvements (#731)

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Co-authored-by: Shelikhoo <xiaokangwang@outlook.com>
Co-authored-by: sixg0000d <sixg0000d@gmail.com>
Co-authored-by: Loyalsoldier <10487845+Loyalsoldier@users.noreply.github.com>
This commit is contained in:
yuhan6665 2021-10-20 01:15:49 -04:00 • committed by GitHub
parent e286cdcaa8
commit 6b6974c804
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
12 changed files with 478 additions and 59 deletions
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120
app/dns/fakedns/fake.go
View file

@ -20,12 +20,30 @@ type Holder struct {
config *FakeDnsPool
}
func (fkdns *Holder) IsIPInIPPool(ip net.Address) bool {
if ip.Family().IsDomain() {
return false
}
return fkdns.ipRange.Contains(ip.IP())
}
func (fkdns *Holder) GetFakeIPForDomain3(domain string, ipv4, ipv6 bool) []net.Address {
isIPv6 := fkdns.ipRange.IP.To4() == nil
if (isIPv6 && ipv6) || (!isIPv6 && ipv4) {
return fkdns.GetFakeIPForDomain(domain)
}
return []net.Address{}
}
func (*Holder) Type() interface{} {
return (*dns.FakeDNSEngine)(nil)
}
func (fkdns *Holder) Start() error {
return fkdns.initializeFromConfig()
if fkdns.config != nil && fkdns.config.IpPool != "" && fkdns.config.LruSize != 0 {
return fkdns.initializeFromConfig()
}
return newError("invalid fakeDNS setting")
}
func (fkdns *Holder) Close() error {
@ -41,7 +59,7 @@ func NewFakeDNSHolder() (*Holder, error) {
if fkdns, err = NewFakeDNSHolderConfigOnly(nil); err != nil {
return nil, newError("Unable to create Fake Dns Engine").Base(err).AtError()
}
err = fkdns.initialize(dns.FakeIPPool, 65535)
err = fkdns.initialize(dns.FakeIPv4Pool, 65535)
if err != nil {
return nil, err
}
@ -117,9 +135,92 @@ func (fkdns *Holder) GetDomainFromFakeDNS(ip net.Address) string {
return ""
}
// GetFakeIPRange return fake IP range from configuration
func (fkdns *Holder) GetFakeIPRange() *gonet.IPNet {
return fkdns.ipRange
type HolderMulti struct {
holders []*Holder
config *FakeDnsPoolMulti
}
func (h *HolderMulti) IsIPInIPPool(ip net.Address) bool {
if ip.Family().IsDomain() {
return false
}
for _, v := range h.holders {
if v.IsIPInIPPool(ip) {
return true
}
}
return false
}
func (h *HolderMulti) GetFakeIPForDomain3(domain string, ipv4, ipv6 bool) []net.Address {
var ret []net.Address
for _, v := range h.holders {
ret = append(ret, v.GetFakeIPForDomain3(domain, ipv4, ipv6)...)
}
return ret
}
func (h *HolderMulti) GetFakeIPForDomain(domain string) []net.Address {
var ret []net.Address
for _, v := range h.holders {
ret = append(ret, v.GetFakeIPForDomain(domain)...)
}
return ret
}
func (h *HolderMulti) GetDomainFromFakeDNS(ip net.Address) string {
for _, v := range h.holders {
if domain := v.GetDomainFromFakeDNS(ip); domain != "" {
return domain
}
}
return ""
}
func (h *HolderMulti) Type() interface{} {
return (*dns.FakeDNSEngine)(nil)
}
func (h *HolderMulti) Start() error {
for _, v := range h.holders {
if v.config != nil && v.config.IpPool != "" && v.config.LruSize != 0 {
if err := v.Start(); err != nil {
return newError("Cannot start all fake dns pools").Base(err)
}
} else {
return newError("invalid fakeDNS setting")
}
}
return nil
}
func (h *HolderMulti) Close() error {
for _, v := range h.holders {
if err := v.Close(); err != nil {
return newError("Cannot close all fake dns pools").Base(err)
}
}
return nil
}
func (h *HolderMulti) createHolderGroups() error {
for _, v := range h.config.Pools {
holder, err := NewFakeDNSHolderConfigOnly(v)
if err != nil {
return err
}
h.holders = append(h.holders, holder)
}
return nil
}
func NewFakeDNSHolderMulti(conf *FakeDnsPoolMulti) (*HolderMulti, error) {
holderMulti := &HolderMulti{nil, conf}
if err := holderMulti.createHolderGroups(); err != nil {
return nil, err
}
return holderMulti, nil
}
func init() {
@ -131,4 +232,13 @@ func init() {
}
return f, nil
}))
common.Must(common.RegisterConfig((*FakeDnsPoolMulti)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
var f *HolderMulti
var err error
if f, err = NewFakeDNSHolderMulti(config.(*FakeDnsPoolMulti)); err != nil {
return nil, err
}
return f, nil
}))
}

96
app/dns/fakedns/fakedns.pb.go
View file

@ -75,6 +75,53 @@ func (x *FakeDnsPool) GetLruSize() int64 {
return 0
}
type FakeDnsPoolMulti struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Pools []*FakeDnsPool `protobuf:"bytes,1,rep,name=pools,proto3" json:"pools,omitempty"`
}
func (x *FakeDnsPoolMulti) Reset() {
*x = FakeDnsPoolMulti{}
if protoimpl.UnsafeEnabled {
mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *FakeDnsPoolMulti) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*FakeDnsPoolMulti) ProtoMessage() {}
func (x *FakeDnsPoolMulti) ProtoReflect() protoreflect.Message {
mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use FakeDnsPoolMulti.ProtoReflect.Descriptor instead.
func (*FakeDnsPoolMulti) Descriptor() ([]byte, []int) {
return file_app_dns_fakedns_fakedns_proto_rawDescGZIP(), []int{1}
}
func (x *FakeDnsPoolMulti) GetPools() []*FakeDnsPool {
if x != nil {
return x.Pools
}
return nil
}
var File_app_dns_fakedns_fakedns_proto protoreflect.FileDescriptor
var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
@ -85,13 +132,18 @@ var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
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}
var (
@ -106,16 +158,18 @@ func file_app_dns_fakedns_fakedns_proto_rawDescGZIP() []byte {
return file_app_dns_fakedns_fakedns_proto_rawDescData
}
var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_app_dns_fakedns_fakedns_proto_goTypes = []interface{}{
(*FakeDnsPool)(nil), // 0: xray.app.dns.fakedns.FakeDnsPool
(*FakeDnsPool)(nil), // 0: xray.app.dns.fakedns.FakeDnsPool
(*FakeDnsPoolMulti)(nil), // 1: xray.app.dns.fakedns.FakeDnsPoolMulti
}
var file_app_dns_fakedns_fakedns_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
0, // 0: xray.app.dns.fakedns.FakeDnsPoolMulti.pools:type_name -> xray.app.dns.fakedns.FakeDnsPool
1, // [1:1] is the sub-list for method output_type
1, // [1:1] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_app_dns_fakedns_fakedns_proto_init() }
@ -136,6 +190,18 @@ func file_app_dns_fakedns_fakedns_proto_init() {
return nil
}
}
file_app_dns_fakedns_fakedns_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*FakeDnsPoolMulti); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
@ -143,7 +209,7 @@ func file_app_dns_fakedns_fakedns_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_app_dns_fakedns_fakedns_proto_rawDesc,
NumEnums: 0,
NumMessages: 1,
NumMessages: 2,
NumExtensions: 0,
NumServices: 0,
},

4
app/dns/fakedns/fakedns.proto
View file

@ -9,4 +9,8 @@ option java_multiple_files = true;
message FakeDnsPool{
string ip_pool = 1; //CIDR of IP pool used as fake DNS IP
int64 lruSize = 2; //Size of Pool for remembering relationship between domain name and IP address
}
message FakeDnsPoolMulti{
repeated FakeDnsPool pools = 1;
}

82
app/dns/fakedns/fakedns_test.go
View file

@ -3,6 +3,8 @@ package fakedns
import (
"testing"
gonet "net"
"github.com/stretchr/testify/assert"
"github.com/xtls/xray-core/common"
@ -11,7 +13,7 @@ import (
"github.com/xtls/xray-core/features/dns"
)
var ipPrefix = "198.18."
var ipPrefix = "198.1"
func TestNewFakeDnsHolder(_ *testing.T) {
_, err := NewFakeDNSHolder()
@ -67,7 +69,7 @@ func TestFakeDnsHolderCreateMappingManySingleDomain(t *testing.T) {
func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
fkdns, err := NewFakeDNSHolderConfigOnly(&FakeDnsPool{
IpPool: dns.FakeIPPool,
IpPool: dns.FakeIPv4Pool,
LruSize: 256,
})
common.Must(err)
@ -101,3 +103,79 @@ func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
}
}
}
func TestFakeDNSMulti(t *testing.T) {
fakeMulti, err := NewFakeDNSHolderMulti(&FakeDnsPoolMulti{
Pools: []*FakeDnsPool{{
IpPool: "240.0.0.0/12",
LruSize: 256,
}, {
IpPool: "fddd:c5b4:ff5f:f4f0::/64",
LruSize: 256,
}},
},
)
common.Must(err)
err = fakeMulti.Start()
common.Must(err)
assert.Nil(t, err, "Should not throw error")
_ = fakeMulti
t.Run("checkInRange", func(t *testing.T) {
t.Run("ipv4", func(t *testing.T) {
inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{240, 0, 0, 5}))
assert.True(t, inPool)
})
t.Run("ipv6", func(t *testing.T) {
ip, err := gonet.ResolveIPAddr("ip", "fddd:c5b4:ff5f:f4f0::5")
assert.Nil(t, err)
inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
assert.True(t, inPool)
})
t.Run("ipv4_inverse", func(t *testing.T) {
inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{241, 0, 0, 5}))
assert.False(t, inPool)
})
t.Run("ipv6_inverse", func(t *testing.T) {
ip, err := gonet.ResolveIPAddr("ip", "fcdd:c5b4:ff5f:f4f0::5")
assert.Nil(t, err)
inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
assert.False(t, inPool)
})
})
t.Run("allocateTwoAddressForTwoPool", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain("fakednstest.v2fly.org")
assert.Len(t, address, 2, "should be 2 address one for each pool")
t.Run("eachOfThemShouldResolve:0", func(t *testing.T) {
domain := fakeMulti.GetDomainFromFakeDNS(address[0])
assert.Equal(t, "fakednstest.v2fly.org", domain)
})
t.Run("eachOfThemShouldResolve:1", func(t *testing.T) {
domain := fakeMulti.GetDomainFromFakeDNS(address[1])
assert.Equal(t, "fakednstest.v2fly.org", domain)
})
})
t.Run("understandIPTypeSelector", func(t *testing.T) {
t.Run("ipv4", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv4.v2fly.org", true, false)
assert.Len(t, address, 1, "should be 1 address")
assert.True(t, address[0].Family().IsIPv4())
})
t.Run("ipv6", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv6.v2fly.org", false, true)
assert.Len(t, address, 1, "should be 1 address")
assert.True(t, address[0].Family().IsIPv6())
})
t.Run("ipv46", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv46.v2fly.org", true, true)
assert.Len(t, address, 2, "should be 2 address")
assert.True(t, address[0].Family().IsIPv4())
assert.True(t, address[1].Family().IsIPv6())
})
})
}